The book Supercapitalism: The Transformation of Business, Democracy, and Everyday Life by Robert B. Reich, is a great description of how capitalism has come to dominate democracy in our government.
When it comes to solutions, I think the book falls short. Follow the link above to see the details.
I think I have come up with a practical step that is better than any that Reich proposes in his book. You’ll also find that at the link.